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Technical Data Sheet
1P9181 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

RELAY-SOLENOID,ENGINE STARTER,EL. Key specifications include duty_type: INTERMITTENT, body_style: CYLINDRICAL FRAME, body_length: 7.920 INCHES NOMINAL IN, thread_class: 2A POWER TAKEOFF FACILITY BUSHING A, inclosure_type: FULLY INCLOSED, terminal_location: ACTUATOR END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-760-3864, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1P9181
NSN: 5945-00-760-3864
FSC: 5945
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
duty_typeINTERMITTENT
body_styleCYLINDRICAL FRAME
body_length7.920 INCHES NOMINAL IN
thread_class2A POWER TAKEOFF FACILITY BUSHING A
inclosure_typeFULLY INCLOSED
terminal_locationACTUATOR END
mounting_slot_width0.280 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES POWER TAKEOFF FACILITY BUSHING IN
actuator_stroke_typePUSH
control_terminal_typeSCREW
linear_force_delivered1.30 OUNCES OZ
magnetic_coil_quantity1
NSN5945-00-760-3864
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY-SOLENOID,ENGINE STARTER,EL TITLE COMPONENT PN 1P9181 MFR RELAY-SOLENOID,ENGINE
KEY FEATURES
INCLOSURE TYPE: FULLY INCLOSED
NOMINAL THREAD SIZE: 0.500 INCHES POWER TAKEOFF FACILITY BUSHING IN
VOLTAGE RATING IN VOLTS: 24.0 DC MAXIMUM
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) POWER TAKEOFF FACILITY BUSHING
LINEAR FORCE DELIVERED: 1.30 OUNCES OZ
TERMINAL TYPE AND QUANTITY: 2 THREADED STUD
THREAD QUANTITY PER INCH: 13 POWER TAKEOFF FACILITY BUSHING
MOUNTING FACILITY TYPE AND QUANTITY: 4 SLOT
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE TYPEFULLY INCLOSED
NOMINAL THREAD SIZE0.500 INCHES POWER TAKEOFF FACILITY BUSHING IN
VOLTAGE RATING IN VOLTS24.0 DC MAXIMUM
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) POWER TAKEOFF FACILITY BUSHING
LINEAR FORCE DELIVERED1.30 OUNCES OZ
TERMINAL TYPE AND QUANTITY2 THREADED STUD
THREAD QUANTITY PER INCH13 POWER TAKEOFF FACILITY BUSHING
MOUNTING FACILITY TYPE AND QUANTITY4 SLOT
THREAD CLASS2A POWER TAKEOFF FACILITY BUSHING A
ACTUATOR STROKE TYPEPUSH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
A-15559Interchangeable
interchangeable cross-reference
interchangeable
15559Interchangeable
interchangeable cross-reference
interchangeable
F-15502PC19-7Interchangeable
interchangeable cross-reference
interchangeable
44-15559Interchangeable
interchangeable cross-reference
interchangeable
1115557Interchangeable
interchangeable cross-reference
interchangeable
1115559Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1P9181?
1P9181 is a RELAY-SOLENOID,ENGINE STARTER,EL.
What parts can replace 1P9181?
There are 15 known substitutes for 1P9181: A-15559, 15559, F-15502PC19-7 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1P9181?
1P9181 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-760-3864. This indicates validated use in U.S. government and defense supply chains.
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